Oil cooler



O. C. PALMER Sept. 10, 1935.

OIL COOLER Filed Sept. 15 1932 JNVENTUR USDA/12 CIPQLMER EY Patented Sept. l0, 1935 OIL COOLER,

Oscar C. Palmer, Phoenix, Ariz.

Application September 13, 1932, Serial No. 632,945

4 Claims.

This invention relates to internal combustion engines and more particularly to the lubrication systems of engines of this general classification.

An object of the present invention is to provide v5 improved and simplified means for controlling the temperature of the lubricating oil of an internal combustion engine.

A more detailed object is to provide an oil temperature regulator for an internal combustion l engine, which includes a cooling unit through which the oil is circulated, wherein the cooling unit is cooperatively associated with the radiator which forms a portion of the cooling system of the engine. This cooperative relationship bel tween the oil cooling unit and the radiator is brought about by embodying the unit in an attachment which can quickly and easily be connected to the radiator and/or to one of the conduits whereby the water is fed to or from the 2Q radiator.

A further object of my invention is to provide an oil cooler having the general characteristics described, which is of simple, rugged and eccncinical construction, which is capable of oper- 25 ating with a high degree of efficiency in cooling the lubricating oilof the engine with which it is associated, and which is not liable to interfere with the normal operation of either the cooling system or the lubricating system of the engine.

The invention comprises other objects and valuable features, some of which, with the foregoing, will be set forth in the following description of the preferred form of my invention. It is to be understood that I do not limit myself to the specic disclosure made by said description, as I may adopt variations of the preferred form within the scope of my invention as set forth in the claims.

Referring to drawing:

Figure l is a longitudinal, vertical sectional View of the lower portion of a radiator and the coupling whereby the lower hose is attached thereto and showing a cooling unit embodying the principles of the present invention operatively associated therewith.

igure 2 is a transverse, vertical sectional view, the plane of section being indicated by the line 2 2 of Figure 1 and the direction of view by the arrows.

In terms of broad inclusion, the present invention contemplates the provision of a device for cooling the oil used in lubricating .an internal combustion engine. This device comprises a cooling unit so interconnected with the lubricating system of the engine that the oil thereof is caused to flow through the unit; and the unit is so interposed into the cooling system of the motor that heat is extracted from the oil by the water or other cooling medium employed in the cooling system. The oil cooling unit is so arranged 5 that it is closely associated with the radiator, preferably being embodied as an attachment releasably mounted either in the radiator itself or inrone of the conduits which establish communication between the radiator and the water jacket 10 of the engine.

Figures l and 2 illustrate a preferred embodiment of my oil cooling unit in the form of a tting which is releasably secured to a radiator it in such position that the water owing from the 15 radiator tilt 'to the lower hose lill is caused to iinpinge against a plurality of tub-es through which the lubricating oil used to lubricate an internal combustion engine (not shown) is caused to iiow. This unit which is indicated in its en- 20 tirety at H38 is constructed similarly to a small section of conventional radiator core, being composed of a plurality of tube members H39 disposed in spaced parallel relationship and each of these members being composed of a pair of opposed 25 plates having aligned beads extending longitudinally thereof to define tubes or oil. passages Il l. These passages communicate at their ends with upper and lower header tanks H12 and il@ respectively. The tube members M39 are sepa- 30 rated by cooling ns lill which preferably ,are corrugated and which assist materally in conducting heat from the oil fiowing through the tubes ill and disseminating it to the water flowing through the spaces H6 between the tube 35 members |99. The spaces l i6, or water passages, communicate at one end Ill of the unit |38 with the interior of the lower header tank H8 of the radiator and to the other end i i9 of the unit |98 a mounting ange lil is soldered or 40 otherwise secured. Through this flange |2l preferably a plurality of openings |22 communicating with the water passages l l extend. The unit 98 is of small enough cross-sectional area to permit it to be inserted into the header tank 45 H8 through the port |23 which is conventionally provided in the after wall i thereof in order to establish communication between the lower hose and the lower header tank. This hose W6 is fastened to the radiator Het by means of a tubu- 50 lar fitting |27 having a flange t28 secured against the after wall |2 as by cap screws |29 so as to hold its bore l3| in registry with the port |23 in the wall |215. However, the flange l2i preferably corresponds in size to the liangel |28 of the 55 Ol l fittingv |21 and is interposed between the flange |28 and the wall iii of the tank H3 so -as to mount the unit |08 rigidly in operative position.

yOil is supplied to preferably the upper header tank H2 of the unit |08 by a tube |35 leading from the lubricating system of the associated engine. Preferably the tube |36 extends through the side wall of the fitting |21 into the bore |3| thereof and thence through the flange |2| into the upper header tank H2 of the oil cooling unit |68. Oil is conducted from the unit |08 by a tube |31 which is similar to the tube |36 except that it communicates with the lower header tank As a slightly different form of this same modi- Vncation'it should be understood that the unit |08Y Y with its bore communicating with said port, and

a conduit secured to said coupling and leading to said engine, said regulating device comprising a flange interposed between said coupling and said header tank, means carried by said flange providing a plurality of oil passages and a plurality of water passages extending adjacent to said oil passages, said Water passages extending through said flange to establish communication between said bore and said header tank, and means interconnecting said oil passages with said lubricating system whereby the lubricant thereof is circulated through said oil passages.

2. An oil temperature regulating device for an internal combustion engine having a lubricating system and a cooling system including a radiator having a header tank having a port in a wall thereof, a tubular coupling secured to said tank with its bore communicating with said port, and a conduit secured to said coupling and leading to said engine, said regulating device extending through said bore leading into said header tank and comprising a flange interposed between said passages. l5

3. An oil temperature regulating device for an i internal combustion engine having a lubricating' system and a cooling system comprising a radiator having a header tank with a port in a wall thereof, a tubular coupling secured to said tank with its bore leading thereinto through said port,1and a conduit leading from said coupling to said engine, said regulating device comprising means providing a plurality of oil passages spaced to provide water passages therebetween, supporting means therefor engaging said coupling and retaining said passage-providing means in position with said water passages communicating with said conduit and said tank, and means connecting said oil passages into said lubricating system. 4. An oil temperature regulating device for an internal combustion engine having a lubricating system and a cooling system comprising a radiator having a header tank with a port in a wall thereof, a tubular coupling secured to said tank with its bore leading thereinto through said port, and a conduit leading from said coupling to said engine, said regulating device comprising means providing a plurality of oil passages spaced to provide water passages therebetween, said passage-providing means being supported by saidV coupling, with said water passages communicating with said conduit and said tank, and means connecting said oil passages into rsaid lubricating system.

OSCAR C. PALMER. 

